BEIJING (Reuters) - Chinese bike-sharing start-up Mobike said it has raised $600 million in a financing round led by Tencent Holdings Ltd, its biggest financing round to date as it seeks to expand aggressively.

BEIJING (Reuters) - Chinese bike-sharing start-up Mobike said it has raised $600 million in a financing round led by Tencent Holdings Ltd, its biggest financing round to date as it seeks to expand aggressively.